IPC section 124-A

http://www.thehindu.com/todays-paper/tp-opinion/sedition-and-the-government/article8242038.ece

http://www.thehindu.com/opinion/lead/sedition-legislation-meant-to-suppress-the-voice-of-indian-people/article7758013.ece :history of sedition law
Queen-Empress v. Jagendra Chunder Bose:first case of sedition in colonial india.
Tilak -first Indian charged for sedition.
Kedarnath singh vs State of Bihar:first case of sedition in Independent India.